Dickey Bett's "One Way Out" solo is a true iconic moment in rock history (so much so that director Martin Scorsese used it for the barroom fight scene in his film, "The Departed"). Like many blues and blues/rock solos, this solo moves back and forth between lines based on minor pentatonic (A minor pentatonic: A C D E G) and major pentatonic (A major pentatonic: A B C# E F#).